Calcule as seguintes porcentagem de porcentagem dando o resultando em porcentagem A)70% DE 80% B)90% DE 90% C) 50% DE 40% D)20% DE 20% E)10% DE 5%?

A- 56%. B- 81%. C- 20%. D-4%. E- 0,5%

A) (70/100)x(80/100)= 5600/10000 = 56/100 = 56%

B) (90/100)x(90/100) = 8100/10000 = 81/100 = 81%

C) (50/100)x(40/100) = 2000/10000 = 20/100 = 20%

D) (20/100)x(20/100) = 400/10000 = 4/100 = 4%

E) (10/100)x(5/100) = 50/10000 = 5/1000 = (5/10)/(1000/10) = 0,5/100 = 0,5%

a) 70% * 80% = 49%

b) 90% * 90% = 81%

c) 50% * 40% = 20%

d) 20% * 20% = 4%

e) 10% * 5% = 0,5%